 /*******************************************************************************
  * Copyright (c) 2005, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.internal.navigator.extensions;

 import org.eclipse.core.runtime.IConfigurationElement;
 import org.eclipse.ui.internal.navigator.NavigatorPlugin;

 /**
  * Provides a common superclass for all consumers of the
  * <b>org.eclipse.ui.navigator.navigatorContent</b> extension point.
  *
  * @since 3.2
  *
  */
 public class NavigatorContentRegistryReader extends RegistryReader implements
         INavigatorContentExtPtConstants {

     protected final NavigatorContentDescriptorManager CONTENT_DESCRIPTOR_MANAGER = NavigatorContentDescriptorManager
             .getInstance();

     protected NavigatorContentRegistryReader() {
         super(NavigatorPlugin.PLUGIN_ID, TAG_NAVIGATOR_CONTENT);
     }

     protected boolean readElement(IConfigurationElement element) {
         String elementName = element.getName();

         /* These are all of the valid root tags that exist */
         return TAG_ACTION_PROVIDER.equals(elementName)
                 || TAG_NAVIGATOR_CONTENT.equals(elementName)
                 || TAG_COMMON_WIZARD.equals(elementName)
                 || TAG_COMMON_FILTER.equals(elementName);
     }
 }

